Project risk assessment is an effective tool for planning and controlling cost, time and achieving the technical performance of a building construction project. Construction projects often face a lot of uncertainties, which places building construction projects at the risk of cost, time overruns as well as poor quality delivery. Considering the limited resources of developing countries, there is need to complete building projects on-time, on-budget, and to meet optimal quality hence, risk management is an important part of the decision making process in construction industry as it determines the success or failure of construction projects. In line with this need, this research aims to establish a system to improve the time, cost and quality performance of building construction projects in developing countries, through a comprehensive risk management model that ensures the expectations of clients are met.
To achieve the aim of this research, a mixed methodological approach was adopted. Through the review of literature, a conceptual risk management framework suitable to elaborate risk assessment of building construction projects especially for developing countries was developed. A questionnaire survey using a nonprobability sampling technique was conducted to elicit information from construction professionals in Nigeria to assess their perception of 79 risk factors identified from literature review based on the likelihood of occurrence and impact on projects using a five point scale. Responses from 343 construction professionals were drawn from 305 contractors and subcontractors and 38 clients (private and public) within the Nigerian construction sector. Response data was subjected to descriptive statistics to depict the frequency distribution and central tendency of responses. Subsequently, the risk acceptability matrix (RAM) was adopted to categorise and prioritise risk factors. 27 critical risks that affect building construction projects were identified. A Bayesian Belief Network (BBN) model was developed by structural learning and used to examine the cause and effect relationship amongst the 27 critical risk factors. The developed BBN model was subjected to validation using a multiple case study of two building construction projects in Nigeria. The result showed the interrelation between the 27 risk factors and how they contributed to cost and time overruns as well as quality problems. The critical risks directly affecting the cost of building construction project were: fluctuation of material prices; health and safety issues; bribery and corruption; material wastage; poor site management and supervision; and time overruns. The critical factors identified to directly affect quality were: supply of defective materials; working under harsh conditions; improper construction methods; lack of protective equipment; ineffective time allocation; poor communication between involved stakeholders; and unsuitable leadership style. Time overruns on building construction projects was directly caused by: quality problems; low productivity; improper construction methods; poor communication between involved parties; delayed payments in contracts; and poor site management and supervision.
As a consolidation of the findings of this research, a BBN model for identifying risk factors that directly affect time, cost and quality on building construction projects has been developed which has the potential for assisting construction stake holders to manage risks on their projects. In view of the findings, a best practice system for risk management in building construction projects in Nigeria has been developed with an implementation guide to help building construction practitioners to successfully implement risk management on their building construction projects. Suitable risk responses, also in the form of recommendations have been identified. The strategies include actions to be taken to respond to risks based on their perceived significance or acceptability as well as some positive risk responses, such as exploiting, sharing, enhancing and accepting, and other negative risk responses, such as avoidance, mitigation transfer and acceptance

Ubiquitous computing describes the aspirations of including information systems into the fabric of our daily lives. The emphasis of the user should be on what task needs to be achieved rather than how the system will do it. The interface of applications that are integrated into the home fabric needs to be delicate in the sense that it should give the feeling of being a part of the home rather than a piece of technology. The human computer interaction/interface needs to be cohesive with the environment people live in so as to maximise the interaction possibilities. Photographs are a very affective and efficient way of connecting people to each other. We should not forget the social role photographs have to play. The most important aspect of the picture is the story that it is trying to convey, the people in it, or the place it was taken. Emotions are a very private part of our personal life and how one displays it reflects one’s lifestyle. In recent years increasing efforts have been put into preserving emotions in photos particularly with the advent of digital cameras. Now photographs have become an important part of our lives and have significant social role as they provide an affective communication link between friends and families. This research will be looking at how people relate themselves to pictures and if we could capture their emotions and expressions to store them in a way that is representative of their feelings towards the picture. As emotions can be associated with pictures of family, friends, places, holidays, social gatherings or travel to mention some of the aspects, we will also be analysing as to how emotions change over a period of time and if it could be represented accordingly in association with digital photos. This will allow us to look into the factors, which can make digital photo sharing a more fun and enjoyable experience. This research will involve user based evaluations and a scenario based approach for modelling the photo sharing interface. The creation of photo sharing system, based on this approach, is then investigated using the method of prototyping. The research shows methods, architectures, and tools used to make the development process more efficient and help assess the viability of the system under conditions that simulate to everyday use of the photo sharing software. To generalise and communicate results, the project will seek to simulate the home environment in a laboratory setting, using prototypes based on current high-end computing devices. The .Net technologies used for rapid prototyping is introduced. The aim of this research is to provide a demonstration environment of a photo sharing software for the smart home, which will allow for Reception/Viewing/distribution of photos within the home environment. The data could incorporate Audio/Video/Text/Photos, and user input etc. The research will also help us understand various aspects of how people interact with Digital Photos, what they would like to do, how can storing photos be made simpler, annotation of pictures, how can sharing photo’s made simpler, and how we can design an application which would allow users to attach emotions to pictures. The photo sharing system will provide an effective means to receive and distribute emotional information based on personal and temporal relationships associated with photos. The research also analyses the role of human computer interaction when developing ubiquitous technologies for the smart homes where information is embedded in the environment people live in. The research will present an overview of how photo sharing systems can be developed and evaluated using prototypes and user evaluations.

The “University” is under pressure to address both local and general requirements from society towards a phenomenon called globalisation. In Brazil, the Ministry of Education has tried, without success, to promote institutional change. Confronted by this situation a process initiated by an internal change agent and based upon the introduction of Action Research was itself the subject of this AR Study by the change agent. This thesis draws upon the findings of that AR and uses it to critically examine the potential to foster change within the higher education context in Brazil using AR. The research was designed in two synchronous processes taking place at two different levels. The first is the facilitation of the uptake of Action Research by a group of academic staff, and the second is the research into that process as a piece of Action Research in its own right by the change agent/facilitator. Facilitation of change has been described as taking place in three phases: a) Mobilization; b) Implementation; and c) Continuation. Throughout such phases in this case data were systematically gathered by the use of five instruments of data collection: 1) Observation; 2) Diary; 3) Questionnaires; 4) Interviews; and 5) Sociogram. Results show my personal learning in facilitating this process of change and two main contributions to knowledge. The first is one which, though local and specific, may nevertheless speak to the challenges faced by other practitioners. Exemplified in this study by the critical exploration of the ‘Daisy Model’ of introducing AR that led to its modification into the ‘Flower Model’. The second is that new knowledge which appears to be more generalisable and for which a case can be made for its wider applicability. Again exemplified in the continuous and disruptive process of change that unfolded to reveal a suitable framework for the use of Action Research as a vehicle of change in a rural university in Brazil where all actions were based on four central principles that emerged from the research: neutrality, voluntary participation, time and motivation. The future success and sustainability of the change processes begun are contingent upon the reaction of the current management of the institution. Five scenarios are examined and a second phase for this AR project is suggested that attempts to address the issues raised.

Associated natural gas is produced as a by-product from crude oil exploration and production. When perceived as a non-desirable product, it is wasted during gas flaring. Globally, about 100 Billion Cubic Meters (BCM) of gas is flared annually, leading to release of about 300 million tons of carbon dioxide yearly into the environment. Russia and Nigeria flare more than other countries to the tune of 35.5 and 18.27 BCM, respectively. The consequence of gas flaring has continued to pose significant threats to the environment as well as the economy of oil and gas producing countries. Therefore, this research is aimed at developing a sustainable framework that could enable management of flared gas in an oil and gas environment by generating energy and also minimise environmental impact that arises from gas flaring process. Three major research gaps were identified and they include lack of existing gas flare management framework in Nigeria, lack of economic evaluation of gas to wire (GTW) technology for flared gas reduction and, lack of cordial relationship and understanding between oil and gas producing/flaring companies and electricity producing sectors towards gas flare management. A qualitative research strategy was employed – utilising the single case study approach with embedded units of analysis. Three case study companies were used - one oil and gas producing company, and two electricity-generating companies. Data collection involved semi structured interviews, documentation, observation, and review of relevant literature. Data was analysed using QSR Nvivo version 10. A framework for flared gas reduction was developed based on literature review and also from information made available by experts operating in the oil and gas and electricity sectors. The framework shows inputs from various stakeholders, as well as an evaluation of volume of gas produced, utilized and flared. An economic assessment of GTW technology was carried out to determine the cost effectiveness of the framework. Findings from the study showed that GTW is a viable means of management, and could reduce the total volume of flared gas in Nigeria to 7.1%. This reduces environmental, health and safety hazards. It is also economically profitable. A total capital investment of £1.64b is required in the Nigerian context, with a net profit of £1.26b/year, and has a rate of return of investment of 16.3%. This study has demonstrated that GTW is a sustainable technology for reducing flared gas in Nigeria and other countries facing similar challenges as Nigeria; and capable of minimising adverse environmental and health impact associated with gas flaring. Therefore, the developed framework is also recommended for effective management of flared gas in such countries.

This dissertation is oriented around two moral ideals. The first is equality and the second perfection or excellence. In the chapter 2 I review some of the literature on the seemingly devastating ‘Levelling Down Objection’ to equality. I am in agreement with Larry Temkin that the Levelling Down Objection is true only if we believe that ‘person-affecting’ value, more specifically, welfare, is the only thing that matters in the moral universe. Hence, the Levelling down objection is premised on the truth of an undefended, highly contentious monism about value The purpose for introducing the Levelling Down Objection in chapter 1 is made clear in chapter 3, where I suggest a new problem for egalitarians. Equality is a comparative relation holding between people. Relations are not properties, and, since it is widely assumed that value supervenes exclusively on properties, we need to show how a relation could be of value. It is crucial to be able say how this could be the case. However, this issue has, to the best of my knowledge, not been addressed in the literature on equality. If we cannot answer this question then the value of the equality relation must reduce to the value of its relata. I try to offer a framework which at least goes as far as demonstrating that this need not be true. Chapters 4 and 5 deal with the value of perfection. I offer a careful reading of the work of an important defender and an important critic of this ideal, the former being Immanuel Kant and the latter being Jean-Jacques Rousseau. The aim of these two chapters is twofold; firstly, I show that the value of perfection consists in the development and cultivation of our capacities for rationality. Secondly I show how perfectionism illuminates the importance of culture and the arts. In the final chapter I bring the insights of this dissertation together in order to address a practical question; whether there are egalitarian reasons to support the arts.

This research aimed to provide an understanding into the experiences of counselling and clinical doctoral training on trainees and their partners. It was hoped that this would increase understanding would provide support for couples impacted by the doctoral programmes in managing the changes induced and maintaining relationship satisfaction. A mixed methods design was chosen to provide an empirical view of stress, dyadic coping and relationship satisfaction of trainees. It adopted a survey design and an analysis of the processes trainees and partners experience throughout the course as a couple through using a Grounded Theory approach. In total 50 trainees in clinical and counselling psychology took part in the survey study that measured perceived stress, dyadic coping and their relationship satisfaction. Data was analysed using regression analysis to explore relationships between the three constructs. The analysis revealed similarities between clinical and counselling trainees in terms of perceived stress, coping and relationship satisfaction. Regression analysis suggested trainees’ relationship satisfaction was predicted by number of children, communication of stress, length of relationship and length of time cohabiting. Fourteen semi-structured interviews were conducted with counselling doctoral trainees and partners. The interviews were transcribed and analysed in accordance with a constructivist version of grounded theory as developed by Charmaz (2006). The grounded theory study revealed a central storyline of 'a journey towards the light at the end of the tunnel' with the social process of striving for equilibrium. This referred to the journey participants experienced whilst the trainee was on the course and highlighted a process as trainees and partners moved through as they developed and adapted to their new lives. The idea of the course being temporary was a thread through the model as participants worked through the stresses whilst focusing on the finishing line at the end of the course. Conflicts arose with participants with children who appeared to undergo a strengthened version of the model. This research provided implications for further specialised support for trainees and partners undergoing the doctoral programmes. It hoped to highlight the difficulties and strengths couples endure on the programme and provides implications for universities and personal therapists to offer systemic support for couples to manage the processes together, making the adjustment process more seamless and meaningful to the couple.

This thesis centres on a narrative inquiry of the life stories of teachers in Post Compulsory Education with the aim of exploring how the ‘self’ is constructed within discursive environments. The study adopts a dialogical approach to narrative identity formation as an ongoing process of becoming within the life course. Grounded in social construction theory (Gergen 2009), the study acknowledges that identity is fluid and determined by context; self-creation is therefore both a collective and individual endeavour situated within the social and cultural context. The research design centres on an in-depth study of four teachers in the exploration of the meanings constructed from autobiographical memories; in addition, the study explores how narrative meanings are mediated within the organisational and political context of being a teacher. The study adopts a psychosocial perspective (McAdams 2006) to life stories and the analysis of narrative construction is conducted through the lens of dialogical self theory with the aim of exploring the multivoiced nature of the self based on a diversity of self-positions (Hermans 2001). Narrative identities are therefore viewed as relational, individuals position themselves within the stories they tell in relation to a particular audience; individuals are also positioned by the social and cultural environment in which they are embedded. The study contributes to current knowledge in relation to the crucial role emotions play in the dialogical construction of the self; findings indicate that early emotionally charged autobiographical memories play a significant role in defining individuals’ moral educational values within their teaching role. Emotions were also central to placing individuals in a field of tension in reconciling their personal values within the current organisational and political environment that imposes constraints on teachers’ professional practice. The study concludes that in order to sustain the moral purpose of teachers’ professional practice, there is a need for the dialogical renewal of the self through transformative discourse.

Measuring semantic similarity is a task needed in many Natural Language Processing (NLP) applications. For example, in Machine Translation evaluation, semantic similarity is used to assess the quality of the machine translation output by measuring the degree of equivalence between a reference translation and the machine translation output. The problem of semantic similarity (Corley and Mihalcea, 2005) is de ned as measuring and recognising semantic relations between two texts. Semantic similarity covers di erent types of semantic relations, mainly bidirectional and directional. This thesis proposes new methods to address the limitations of existing work on both types of semantic relations. Recognising Textual Entailment (RTE) is a directional relation where a text T entails the hypothesis H (entailment pair) if the meaning of H can be inferred from the meaning of T (Dagan and Glickman, 2005; Dagan et al., 2013). Most of the RTE methods rely on machine learning algorithms. de Marne e et al. (2006) propose a multi-stage architecture where a rst stage determines an alignment between the T-H pairs to be followed by an entailment decision stage. A limitation of such approaches is that instead of recognising a non-entailment, an alignment that ts an optimisation criterion will be returned, but the alignment by itself is a poor predictor for iii non-entailment. We propose an RTE method following a multi-stage architecture, where both stages are based on semantic representations. Furthermore, instead of using simple similarity metrics to predict the entailment decision, we use a Markov Logic Network (MLN). The MLN is based on rich relational features extracted from the output of the predicate-argument alignment structures between T-H pairs. This MLN learns to reward pairs with similar predicates and similar arguments, and penalise pairs otherwise. The proposed methods show promising results. A source of errors was found to be the alignment step, which has low coverage. However, we show that when an alignment is found, the relational features improve the nal entailment decision. The task of Semantic Textual Similarity (STS) (Agirre et al., 2012) is de- ned as measuring the degree of bidirectional semantic equivalence between a pair of texts. The STS evaluation campaigns use datasets that consist of pairs of texts from NLP tasks such as Paraphrasing and Machine Translation evaluation. Methods for STS are commonly based on computing similarity metrics between the pair of sentences, where the similarity scores are used as features to train regression algorithms. Existing methods for STS achieve high performances over certain tasks, but poor results over others, particularly on unknown (surprise) tasks. Our solution to alleviate this unbalanced performances is to model STS in the context of Multi-task Learning using Gaussian Processes (MTL-GP) ( Alvarez et al., 2012) and state-of-the-art iv STS features ( Sari c et al., 2012). We show that the MTL-GP outperforms previous work on the same datasets.

There is ample academic evidence indicating high levels of HIV stigma among BSSA communities. The research suggests that disadvantaged and marginalised social groups like the BSSA communities experience high levels of HIV and sexually transmitted infections. There is a significant amount of quantitative research in the public domain on HIV and stigma. Quantitative research has shown that BSSA communities present late with HIV and sexually transmitted infections often owing to HIV stigma. Currently there is limited published qualitative information on the factors influencing HIV stigma and sexual health seeking behaviour among BSSA communities, particularly from the perspective of the communities themselves. This research study explored beliefs and perceptions in the construction of HIV stigma and sexual health seeking behaviour among Black sub-Sahara African (BSSA) communities in one city in the UK. The Silences Framework, which sits within aspects of feminism, criticalist and ethnicity-based approaches, provided the theoretical underpinning for this study. An exploratory qualitative study methodology was used to identify and explore the key factors influencing the construction of HIV stigma and sexual health seeking behaviour among BSSA communities. Five focus groups and fifteen one-to-one semi-structured follow-up interviews were conducted to collect the data. The institution of Marriage, Religion, Reported HIV statistics, Politics and Immigration, HIV as a Sensitive subject, sexual health professionals Cultural competence, gender stereotyping, Sexual Orientation and Social Media emerged as key pillars underpinning the social scripts associated with the construction of HIV stigma and sexual health seeking behaviour. The experiences emanating from the pillars of HIV stigma, identified in this study, showed the impact of social, political and personal contexts associated with specific sexual scripts among the participants impacting on the construction of HIV stigma and sexual health seeking behaviour. The 'silences' contained in the socially determined scripts were important in understanding the phenomenon under investigation. The findings from this study were reviewed in light of current sexual health policies and strategies to consider how sexual health professionals and services can best meet the health care needs of BSSA communities. This thesis contributes to current knowledge of HIV stigma and ethnicity, by concluding that the construction of HIV stigma and sexual health seeking behaviour among BSSA communities takes place during different contexts of socialization, in a bid to conform to the perceived expectations of society which may be real or imagined. Furthermore, conformity is also influenced by commonly shared and personal appraisal of socially determined relevant issues. These contexts form the bases on which sexual scripts are given meaning and HIV stigma is constructed alongside a socially sanctioned pattern of sexual health seeking behaviour. This study makes an additional contribution in that it is the first time that The Silences Framework has been used to research HIV and stigma among BSSA communities. This research study compliments the currently available pool of quantitative data linking issues of HIV stigma and ethnicity in the United Kingdom. The findings from this exploratory qualitative research study reveal a wide range of critical issues to encourage further qualitative research in the area, while indicating new issues to consider in developing UK based interventions to address HIV stigma and sexual health seeking behaviour among BSSA communities.

To ensure greater success in its regular projects, Abu-Dhabi Police (ADP) is working on: training their project managers, applying project management software, utilising the services of engineering consultants, etc. However, the performance and outcomes of its projects are still not fully meeting the desired expectations. Therefore, a study to understand some of the undermining factors was carried out. A critical literature review was carried out initially where it was established that project delivery and outcomes are affected in part by the three overarching factors of: project managers’ characteristics, organizational culture and project management culture. On this basis a conceptual framework was developed highlighting how these 3 compound factors affect project performance and outcome; and in particular how ADP’s values relate with the competencies of their project managers. The empirical aspects involved the use of mixed methods where the first part was a quantitative survey of the understanding and achievement of both ADP’s 5 values (part of organizational culture) and 15 competencies (part of project manager’s characteristics), as well as the impact of the former on the later. A questionnaire was administered to 157 people for data collection and 71 fully completed responses were obtained, representing a response rate of 45%. Descriptive statistics were used to evaluate the levels of achievement of ADP’s values and competencies, which were found to be high. The analysis went on to use ordered logistic regression to examine the association between the attainment of ADP’s values and competencies. The findings showed that the 5 values impact on the competencies of ADP’s project managers differently; for example, the value of ‘integrity and honesty’ impacts heavily on the 5 competencies of Integration management, Scope management, Time management, Achieving and action, and Leadership; while the value of ‘effective communication’ impacts heavily on the 3 competencies of Scope management, Cost management, and Achieving and action. An advanced training programme was subsequently developed for ADP to further increase the attainment of values and competencies by their project managers. This programme was developed in focus group discussions that involved some selected project managers who had long working experience and high understanding of ADP project schemes. A further round of focus group discussions was also used to validate this advanced training programme.

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